avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/board/ti/am43xx/board.h

@@ -0,0 +1,63 @@
+/*
+ * board.h
+ *
+ * TI AM437x boards information header
+ * Derived from AM335x board.
+ *
+ * Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _BOARD_H_
+#define _BOARD_H_
+
+#include <asm/arch/omap.h>
+
+#define DEV_ATTR_MAX_OFFSET    5
+#define DEV_ATTR_MIN_OFFSET    0
+
+static inline int board_is_eposevm(void)
+{
+	return board_ti_is("AM43EPOS");
+}
+
+static inline int board_is_gpevm(void)
+{
+	return board_ti_is("AM43__GP");
+}
+
+static inline int board_is_sk(void)
+{
+	return board_ti_is("AM43__SK");
+}
+
+static inline int board_is_idk(void)
+{
+	return board_ti_is("AM43_IDK");
+}
+
+static inline int board_is_hsevm(void)
+{
+	return board_ti_is("AM43XXHS");
+}
+
+static inline int board_is_evm(void)
+{
+	return board_is_gpevm() || board_is_hsevm();
+}
+
+static inline int board_is_evm_14_or_later(void)
+{
+	return board_is_evm() && strncmp("1.4", board_ti_get_rev(), 3) <= 0;
+}
+
+static inline int board_is_evm_12_or_later(void)
+{
+	return board_is_evm() && strncmp("1.2", board_ti_get_rev(), 3) <= 0;
+}
+
+void enable_uart0_pin_mux(void);
+void enable_board_pin_mux(void);
+void enable_i2c0_pin_mux(void);
+#endif